Filter structure for iterative signal processing

摘要: The present invention relates to improved multiple access communications. In one form, the an signal processing method and apparatus for iterative of determining reception a in multi user packet based wireless OFDM (Orthogonal Frequency Division Multiplexing) communication system. other forms provides recursive filtering joint decoding variety systems functions such as linear channel decoders, equalisation, estimation detection/decoding, space-time processing, interference cancellation demodulation. particular form circuit multiuser communications receiver comprising first means receiving at least received signal, said two filters that filter estimate selected estimated output second estimates delayed by iteration cycle, input filter, providing further succeeding cycle circuit.